21542114410 has 32 divisors (see below), whose sum is σ = 40473240192. Its totient is φ = 8239851840.

The previous prime is 21542114357. The next prime is 21542114423. The reversal of 21542114410 is 1441124512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 944845 + ... + 967375.

It is an arithmetic number, because the mean of its divisors is an integer number (1264788756).

Almost surely, 2^21542114410 is an apocalyptic number.

21542114410 is a deficient number, since it is larger than the sum of its proper divisors (18931125782).

21542114410 is a wasteful number, since it uses less digits than its factorization.

21542114410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26718.

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 21542114410 its reverse (1441124512), we get a palindrome (22983238922).

The spelling of 21542114410 in words is "twenty-one billion, five hundred forty-two million, one hundred fourteen thousand, four hundred ten".